As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER APU BLEED AIR SELECTED ON, THERE WAS AN ODOR & HAZY SMOKE IN THE COCKPIT & CABIN. WITH ENGS RUNNING & APU BLEED AIR OFF THE ODOR & SMOKE DISSIPATED. REMOVED STARTER & GENERATOR COOLING DUCT FOUND OIL SOAKED. APU IS LEAKING INTERNALLY. REMOVED APU, PN 3800785-1 & SN P-387 FROM ACFT. INSTALLED APU, PN 3800785-1 & SN P-109, IAW MM 49-10-00. LEAK & OPS CHECKED GOOD.